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Finding the Fourth Proportional to 78,995.25, 118,513.40 and 23,591.25

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Solution

The fourth proportional to 78,995.25, 118,513.40 and 23,591.25 is: 35,393.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,995.25 : 118,513.40 = 23,591.25 : x
  2. Step 2: Convert to fraction form
    78,995.25/118,513.40 = 23,591.25/x
  3. Step 3: Cross multiply
    78,995.25x = 118,513.40 × 23,591.25
  4. Step 4: Simplify right side
    78,995.25x = 2,795,879,129.79
  5. Step 5: Solve for x
    x = 2,795,879,129.79/78,995.25
  6. Step 6: Final answer
    x = 35,393.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.